checking rooms, closets, bathrooms, corridors,and so on, as you proceed. Notice that a widerwall is required to allow room for a plumbing pipeto be contained within the wall.2. Locate all doors. Both exterior and interiordoors can be drawn easily if you use an archi-tectural template. Notice that exterior doors inresidential houses generally swing inward, whereasthose of commercial buildings are often requiredby building or fire codes to swing outward.Some people prefer a full or 90-degree door swingover the 30-degree swing because they can checkto be certain that it will not interfere withany equipment, walls, or appurtenances in theroom.3. Draw in and locate all windows, usingproper window symbols and conventions. Next,draw the stairs (and handrails, if any) and otherexterior and interior features, fixtures,equipments, appliances, and cabinets, using theirproper symbols.4. Lay out the guidelines for dimensions andthe dimension lines. Now that the building basicfloor plan is lightly laid out, double-check andreview the accuracy and completeness of theinformation drawn in. You are now ready todarken in the plan. Remember that, otherthan the construction lines (which need notbe erased), all of the lines must be drawn darklyand will vary only in the width of their lines.As an EA, you must develop a systematicapproach in pursuing a fast and orderly darkeningof lines. Darkening from left to right andthen from top to bottom is common practice.To help keep the drawings clean, EAs oftencover a partial section of their finished drawingwith a clean sheet of paper while darkening theexposed section.5. Draw in section markings on the floor planand indicate where the wall sections have beentaken. If at this point neither the section nor detailmarkings have been decided upon, they may beplaced on the plan later. Complete the drawingby adding all the material symbols, title, graphicscale, and other relative information. Go overyour floor-plan checklist for completeness.One of your challenges as an EA (and ameasure of drafting competency) is to apply yourdimensioning technique to the various types ofmaterials and construction methods used on thebuilding. Although the principles of dimensioningand general locations of dimensions are the same,a difference exists in which dimensions are shown,and how the walls, openings, and partitions aredimensioned.DIMENSIONING A FLOOR PLAN. Gen-erally, dimensions should be laid out on sketchpaper before they are placed on the drawing.Besides dimensions for interior partitions, asmany dimensions as possible are placed outsidethe plan to avoid overcrowding. Moreover,exterior dimensions are kept far enough awayfrom the plan to avoid interfering with roofoverhangs, notes, porches, or other features. InDIMENSIONING FLOOR PLANS, proceed asfollows:1. For wood-frame construction, locate theextension line of the exterior wall dimension atthe outside face of the studs or stud line (fig.10-14, view A). Partitions are measured from theFigure 10-14.-Dimensioning wood-frame and veneer construction.10-17